What is MERGE/UPSERT and when should it be used?

What is MERGE/UPSERT and when should it be used?

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: hard

标签: interviewbit, sql, topic-specific, database

参考答案摘要

MERGE (also known as UPSERT) is an operation that allows inserting new rows and updating existing rows in a single statement. It compares records from a source dataset with a target table and decides ...

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